package com.cet.designpatterns.principle.ocp;

/**
 * @program: algorithm
 * @description:
 * @author: 陈恩涛
 * @create: 2021-08-27 17:08
 **/
public class Ocp {
    public static void main(String[] args) {
        GraphicEditor graphicEditor = new GraphicEditor();
        graphicEditor.drawShape(new Rectangle());
        graphicEditor.drawShape(new Circle());
        graphicEditor.drawTriangle(new Triangle());
    }
}

/**
 * 这是一个绘图的工具诶【使用方】
 */
class GraphicEditor {
    public void drawShape(Shape s) {
        if (s.m_type == 1) {
            drawRectangle(s);
        } else if (s.m_type == 2) {
            drawCircle(s);
        } else if (s.m_type == 3) {
            drawTriangle(s);
        }
    }
    public void drawRectangle(Shape r) {
        System.out.println("绘制矩形");
    }
    public void drawCircle(Shape r) {
        System.out.println("绘制圆形");
    }

    //新增绘制三角形方法，违背了ocp原则
    public void drawTriangle(Shape r) {
        System.out.println("绘制三角形");
    }
}

class Shape {
    int m_type;
}
class Rectangle extends Shape {
    Rectangle() {
        super.m_type = 1;
    }
}
class Circle extends Shape {
    Circle() {
        super.m_type = 2;
    }
}

class Triangle extends Shape{
    public Triangle() {
        super.m_type = 3;
    }
}
